Multisensory Perception of Flavor in Food Systems

Multisensory perception of flavour arises from the dynamic integration of gustatory, olfactory, tactile, visual and even auditory cues to form a unified sensory experience. Intrinsic factors such as chemical composition, texture and aroma molecules interact with extrinsic cues including colour, packaging and ambient sound, shaping both the intensity and hedonic quality of flavour. Central neural mechanisms coordinate these diverse inputs, with converging pathways in the orbitofrontal cortex and insula binding taste, smell and somatosensory signals into a coherent percept. Cognitive influences—expectation, attention and prior experience—modulate this integration, leading to individual differences in liking and perceived intensity. Practical applications span sugar and salt reduction strategies, where aroma enhancements and textural adjustments compensate for lower concentrations of sapid compounds, to product design that leverages cross-modal congruency for healthier yet palatable offerings. Understanding these interactions is crucial for global public health initiatives, consumer satisfaction and innovation in food technology.

Research from Nature Portfolio

Recent studies have highlighted the importance of respiratory dynamics and timing in flavour integration. Work on the synchronisation of olfactory stimulation with natural breathing patterns demonstrated that delivering retronasal odours immediately after ingestion significantly enhances sweetness perception, whereas orthonasal cues or off-phase delivery yield minimal enhancement. This finding reveals that the temporal order of taste and smell, in harmony with inhalation and exhalation, is a critical determinant of cross-modal intensity effects and underscores the role of respiratory-linked sensory processing in shaping flavour experiences.

Multisensory Perception of Flavor in Food Systems publication trend

The graph below shows the total number of articles in multisensory perception of flavor in food systems across all publications each year (not limited to Nature Index journals).

Technical terms

Retronasal olfaction: Detection of odour molecules released in the mouth during exhalation, contributing to flavour.

Cross-modal interaction: A phenomenon where one sensory modality alters the perception of another, for example aroma increasing sweetness.

Oral referral: The perceptual mislocalisation of olfactory stimuli to the mouth, reinforcing flavour unity.

Volatile organic compounds (VOCs): Small, easily vapour-phase molecules responsible for aroma profiles in foods and beverages.

Congruency: The degree of compatibility between sensory cues that facilitates their integration into a single percept.

References

1. The Role of Intrinsic and Extrinsic Sensory Factors in Sweetness Perception of Food and Beverages: A Review. Foods (2019).
2. Dose-Response Relationships for Vanilla Flavor and Sucrose in Skim Milk: Evidence of Synergy. Beverages (2018).
3. Oral referral: On the mislocalization of odours to the mouth. Food Quality and Preference (2016).
4. Taste of breath: the temporal order of taste and smell synchronized with breathing as a determinant for taste and olfactory integration. Scientific Reports (2017).
5. What Is the Relationship between the Presence of Volatile Organic Compounds in Food and Drink Products and Multisensory Flavour Perception?. Foods (2021).
6. The Enhancement of the Perception of Saltiness by Odorants Selected from Chinese Douchi in Salt Solution. Foods (2022).
7. Ternary Cross-Modal Interactions between Sweetness, Aroma, and Viscosity in Different Beverage Matrices. Foods (2020).